AINeutralarXiv – CS AI · 8h ago6/10
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ANN Search: Recall What Matters
Researchers propose replacing Recall@k with 1/Ratio@k as the standard metric for evaluating approximate nearest neighbor (ANN) search algorithms. The new metric measures actual distance quality rather than overlap with true neighbors, achieving operational thresholds at substantially lower computational cost while better tracking real-world task performance in classification and retrieval-augmented generation.